in src/filter-j2.py [0:0]
def isTab(tabName):
"""
Returns whether we are currently within a tab having the given name, as
dictated by prior calls to beginTab() and endTab().
:param tabName:
The name of the tab to test.
:return bool:
True if we are currently within the tab having the given name, False
otherwise.
"""
global tabStack
return tabStack[-1] == tabName